US20110014316A1 - Injection molding device with ejection mechanism - Google Patents
Injection molding device with ejection mechanism Download PDFInfo
- Publication number
- US20110014316A1 US20110014316A1 US12/778,133 US77813310A US2011014316A1 US 20110014316 A1 US20110014316 A1 US 20110014316A1 US 77813310 A US77813310 A US 77813310A US 2011014316 A1 US2011014316 A1 US 2011014316A1
- Authority
- US
- United States
- Prior art keywords
- cover body
- injection molding
- cover
- ejection mechanism
- ejector pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C45/401—Ejector pin constructions or mountings
Definitions
- the present disclosure relates to an molding devices and, particularly, to an injection molding device with an ejection mechanism.
- FIG. 1 a cross-sectional view of an ejection mechanism 10 of an injection molding device 11 in the related art, the ejection mechanism 10 is configured for ejecting a finished product 12 from the injection molding device 11 .
- the ejection mechanism 10 includes a cover 101 and an ejector pin 102 .
- One end of the ejector pin 102 is connected to the cover 101 , and another end of the ejector pin 102 forms a free end 103 , which is a circular platform.
- the free end 103 is received in a groove 110 of the injection molding device 11 , and is surrounded by the molding material.
- an external force is applied on the cover 101 of the ejection mechanism 10 , so that, the cover 101 is pushed to drive the ejector pin 102 to eject the finished product 12 from the groove 110 .
- the finished product 12 when the finished product 12 is ejected from the groove 110 , because the surface of the free end 103 is quite rough, the finished product 12 often adheres to the free end 103 , and thus cannot easily separate from the ejector pin 102 .
- FIG. 1 is a cross-sectional view of an ejection mechanism of an injection molding device in a related art.
- FIG. 2 is a cross-sectional view of an ejection mechanism of an injection molding device in accordance with an exemplary embodiment.
- FIG. 3 is another cross-sectional view of the ejection mechanism of the injection molding device of FIG. 2 , showing a use state.
- FIG. 4 is yet another cross-sectional view of the ejection mechanism of the injection molding device of FIG. 2 , showing another use state.
- an ejection mechanism 20 of an injection molding device is provided.
- the ejection mechanism 20 is configured for ejecting a finished product 30 from an injection molding device 40 .
- the ejection mechanism 20 includes a cover 23 , an ejector pin 24 , a housing 25 sleeved on the ejector pin 24 , and an elastic part 26 placed over the ejector pin 24 .
- Two ends of the elastic part 26 resist the cover 23 and the housing 25 respectively.
- One end of the ejector pin 24 is fixed to the cover 23 , and, for instance, the ejector pin 24 can be fixed to the cover 23 by screwing.
- Another end of the ejector pin 24 forms a free end 241 .
- the elastic part 26 is a spring.
- the housing 25 is substantially hollow, stepped cylinder shaped with a through hole 256 defined therein, and includes a first cover body 251 , a second cover body 253 connected to the first cover body 251 , and a third cover body 255 connected to the second cover body 253 .
- the diameters of the first cover body 251 , the second cover body 253 , and the third cover body 255 is decreased in sequence with the first cover body 251 having the largest diameter.
- the third cover body 255 is a substantially hollow cone.
- the first cover body 251 and the second cover body 253 are hollow cylinders.
- the first cover body 251 and the second cover body 253 may be, for example, hollow rectangular cylinders.
- the elastic part 26 resists the first cover body 251 .
- a flange 242 is defined at the free end 241 of the ejector pin 24 , and is configured for covering the through hole 256 .
- the first cover body 251 cooperates with the second cover body 253 and the third cover body 255 to form an injection molding machine.
- the injection molding device 40 includes a first receiving cavity 401 for receiving the first cover body 251 , a second receiving cavity 403 for receiving the second cover body 253 , and a third receiving cavity 405 for receiving the third cover body 255 .
- the first receiving cavity 401 communicates with the second receiving cavity 403
- the second receiving cavity 403 communicates with the third receiving cavity 405 .
- the diameter of the second receiving cavity 403 is less than that of the first receiving cavity 401 .
- the diameter of the limitation cavity 407 exceeds that of the second receiving cavity 403 .
- the limitation cavity 407 and the second receiving cavity 403 are configured for receiving the second cover body 253 .
- the third cover body 255 and the finished product 30 are received in the third receiving cavity 405 .
- molding material (not shown) in the third receiving cavity 405 of the injection molding device 40 is in liquid form (molten)
- the third cover body 255 and the flange 242 are surrounded by the molding material. After the molding material is cooled to form the finished product 30 , the third cover body 255 and the finished product 30 are received in the third receiving cavity 405 .
- the elastic part 26 and the ejector pin 24 are driven to move towards the finished product 30 , so that the elastic part 26 pushes the housing 25 to move towards the finished product 30 , and the flange 242 pushes the finished product 30 .
- the ejection mechanism 20 is moved from the position A to a position B (as shown in FIG. 3 )
- the first cover body 251 is received in the first receiving cavity 401 and the limitation cavity 407
- the second cover body 253 is received in the second receiving cavity 403 and the third receiving cavity 405
- the third cover body 255 cooperates with the flange 242 to eject the finished product 30 from the third receiving cavity 405 .
- the finished product 30 is moved relative to the injection molding device 40 , the finished product 30 is still attached to the third cover body 255 of the ejection mechanism 20 .
- the external force is further applied on the cover 23 , the elastic part 26 is elastically further deformed by the cover 23 , and the flange 242 is thus driven to extend relative to the third cover body 255 away from the cover 23 , so that, the ejection mechanism 20 is moved from the position B to a position C (as shown in FIG. 4 ).
- the ejector pin 24 is guided by the housing 25 to move away from the housing 25 , so that, the flange 242 of the ejector pin 24 is separated from the through hole 256 , thereby detaching the finished product 30 from the third cover body 255 .
- the elastic part 26 When the external force applied on the cover 23 is removed, the elastic part 26 recoils to drive the flange 242 to be back relative to the third cover body 255 , thereby covering the through hole 256 by the flange 242 .
- the ejection mechanism 20 is back to the position B from the position C.
Abstract
An injection molding device with an ejection mechanism includes a cover, an ejector pin, a housing movably sleeving the ejector pin, and an elastic part placed over the ejector pin. The housing defines a through hole. One end of the ejector pin is fixed to the cover. Two opposite ends of the elastic part resist the cover and the housing respectively. A flange is defined in one end of the ejector pin opposite to the end fixed to the cover, and is configured for covering the through hole. The ejector pin is guided by the through hole to move away from the housing to drive the flange to push a finished product. The elastic part is configured for driving the flange to cover the through hole.
Description
- 1. Technical Field
- The present disclosure relates to an molding devices and, particularly, to an injection molding device with an ejection mechanism.
- 2. Description of Related Art
- Referring to
FIG. 1 , a cross-sectional view of anejection mechanism 10 of aninjection molding device 11 in the related art, theejection mechanism 10 is configured for ejecting a finishedproduct 12 from theinjection molding device 11. Theejection mechanism 10 includes acover 101 and anejector pin 102. One end of theejector pin 102 is connected to thecover 101, and another end of theejector pin 102 forms afree end 103, which is a circular platform. When molding, thefree end 103 is received in agroove 110 of theinjection molding device 11, and is surrounded by the molding material. After the molding material is cooled and sets, an external force is applied on thecover 101 of theejection mechanism 10, so that, thecover 101 is pushed to drive theejector pin 102 to eject the finishedproduct 12 from thegroove 110. - However, when the finished
product 12 is ejected from thegroove 110, because the surface of thefree end 103 is quite rough, the finishedproduct 12 often adheres to thefree end 103, and thus cannot easily separate from theejector pin 102. - Therefore, what is needed is an injection molding device with an ejection mechanism to overcome the described shortcoming.
-
FIG. 1 is a cross-sectional view of an ejection mechanism of an injection molding device in a related art. -
FIG. 2 is a cross-sectional view of an ejection mechanism of an injection molding device in accordance with an exemplary embodiment. -
FIG. 3 is another cross-sectional view of the ejection mechanism of the injection molding device ofFIG. 2 , showing a use state. -
FIG. 4 is yet another cross-sectional view of the ejection mechanism of the injection molding device ofFIG. 2 , showing another use state. - Referring to
FIG. 2 , anejection mechanism 20 of an injection molding device is provided. Theejection mechanism 20 is configured for ejecting a finishedproduct 30 from aninjection molding device 40. Theejection mechanism 20 includes acover 23, anejector pin 24, ahousing 25 sleeved on theejector pin 24, and anelastic part 26 placed over theejector pin 24. Two ends of theelastic part 26 resist thecover 23 and thehousing 25 respectively. One end of theejector pin 24 is fixed to thecover 23, and, for instance, theejector pin 24 can be fixed to thecover 23 by screwing. Another end of theejector pin 24 forms afree end 241. In the embodiment, theelastic part 26 is a spring. - The
housing 25 is substantially hollow, stepped cylinder shaped with a throughhole 256 defined therein, and includes afirst cover body 251, asecond cover body 253 connected to thefirst cover body 251, and athird cover body 255 connected to thesecond cover body 253. The diameters of thefirst cover body 251, thesecond cover body 253, and thethird cover body 255 is decreased in sequence with thefirst cover body 251 having the largest diameter. Thethird cover body 255 is a substantially hollow cone. In the embodiment, thefirst cover body 251 and thesecond cover body 253 are hollow cylinders. In another embodiment, thefirst cover body 251 and thesecond cover body 253 may be, for example, hollow rectangular cylinders. Theelastic part 26 resists thefirst cover body 251. Aflange 242 is defined at thefree end 241 of theejector pin 24, and is configured for covering the throughhole 256. In the embodiment, thefirst cover body 251 cooperates with thesecond cover body 253 and thethird cover body 255 to form an injection molding machine. - The
injection molding device 40 includes afirst receiving cavity 401 for receiving thefirst cover body 251, asecond receiving cavity 403 for receiving thesecond cover body 253, and a third receivingcavity 405 for receiving thethird cover body 255. Thefirst receiving cavity 401 communicates with thesecond receiving cavity 403, and thesecond receiving cavity 403 communicates with the third receivingcavity 405. The diameter of the second receivingcavity 403 is less than that of thefirst receiving cavity 401. When theejection mechanism 20 is in a position A (as shown inFIG. 2 ), thefirst cover body 251 is received in thefirst receiving cavity 401, and forms alimitation cavity 407 with thesecond receiving cavity 403 and the portion of thesecond cover body 253 received in thefirst receiving cavity 401. The diameter of thelimitation cavity 407 exceeds that of thesecond receiving cavity 403. Thelimitation cavity 407 and thesecond receiving cavity 403 are configured for receiving thesecond cover body 253. Thethird cover body 255 and the finishedproduct 30 are received in the third receivingcavity 405. While molding material (not shown) in the third receivingcavity 405 of theinjection molding device 40 is in liquid form (molten), thethird cover body 255 and theflange 242 are surrounded by the molding material. After the molding material is cooled to form the finishedproduct 30, thethird cover body 255 and the finishedproduct 30 are received in the third receivingcavity 405. - Referring to
FIG. 3 , when an external force is applied on thecover 23, theelastic part 26 and theejector pin 24 are driven to move towards the finishedproduct 30, so that theelastic part 26 pushes thehousing 25 to move towards the finishedproduct 30, and theflange 242 pushes the finishedproduct 30. When theejection mechanism 20 is moved from the position A to a position B (as shown inFIG. 3 ), thefirst cover body 251 is received in thefirst receiving cavity 401 and thelimitation cavity 407, and thesecond cover body 253 is received in thesecond receiving cavity 403 and the third receivingcavity 405, thethird cover body 255 cooperates with theflange 242 to eject the finishedproduct 30 from thethird receiving cavity 405. Although the finishedproduct 30 is moved relative to theinjection molding device 40, the finishedproduct 30 is still attached to thethird cover body 255 of theejection mechanism 20. - Referring to
FIG. 4 , the external force is further applied on thecover 23, theelastic part 26 is elastically further deformed by thecover 23, and theflange 242 is thus driven to extend relative to thethird cover body 255 away from thecover 23, so that, theejection mechanism 20 is moved from the position B to a position C (as shown inFIG. 4 ). Theejector pin 24 is guided by thehousing 25 to move away from thehousing 25, so that, theflange 242 of theejector pin 24 is separated from the throughhole 256, thereby detaching the finishedproduct 30 from thethird cover body 255. - When the external force applied on the
cover 23 is removed, theelastic part 26 recoils to drive theflange 242 to be back relative to thethird cover body 255, thereby covering the throughhole 256 by theflange 242. Theejection mechanism 20 is back to the position B from the position C. - When the
cover 23 is pulled by theelastic part 26, theejector pin 24 is pulled by thecover 23, so that, theelastic part 26 recoils and thehousing 25 is pushed by theflange 242, and theejection mechanism 20 returns to the position A from the position B. - Although the present disclosure has been specifically described on the basis of the embodiments thereof, the disclosure is not to be construed as being limited thereto. Various changes or modifications may be made to the embodiments without departing from the scope and spirit of the disclosure.
Claims (9)
1. An injection molding device with an ejection mechanism, comprising:
a cover;
an ejector pin, wherein one end of the ejector pin is fixed to the cover;
a housing defining a through hole, the housing movably sleeving the ejector pin via the through hole;
an elastic part placed over the ejector pin, wherein two ends of the elastic part resist the cover and the housing respectively;
wherein, a flange is defined in an end of the ejector pin opposite to the end fixed to the cover, and is configured for covering the through hole, the ejector pin is guided by the through hole to move away from the housing to drive the flange to push a finished product, and the elastic part is configured for driving the flange to cover the through hole.
2. The injection molding device with the ejection mechanism as described in claim 1 , wherein the housing comprises a first cover body, a second cover body connected to the first cover body, and a third cover body connected to the second cover body, the diameters of the first cover body, the second cover body, and the third cover body is decreased in sequence with the first cover body having the largest diameter, the third cover body is a substantially hollow cone, and the elastic part resists the first cover body.
3. The injection molding device with the ejection mechanism as described in claim 2 , wherein the first cover body cooperates with the second cover body and the third cover body to form an injection molding machine.
4. The injection molding device with the ejection mechanism as described in claim 2 , wherein the first cover body and the second cover body are hollow cylinders.
5. The injection molding device with the ejection mechanism as described in claim 1 , wherein the ejector pin is fixed to the housing by screwing.
6. The injection molding device with the ejection mechanism as described in claim 1 , wherein the elastic part is a spring.
7. The injection molding device with the ejection mechanism as described in claim 2 , further comprising a first receiving cavity for receiving the first cover body, a second receiving cavity for receiving the second cover body, and a third receiving cavity for receiving the third cover body.
8. The injection molding device with the ejection mechanism as described in claim 7 , wherein the first receiving cavity communicates with the second receiving cavity, and the second receiving cavity communicates with the third receiving cavity.
9. The injection molding device with the ejection mechanism as described in claim 7 , wherein the diameter of the second receiving cavity is less than the first receiving cavity.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910304473.X | 2009-07-17 | ||
CN200910304473XA CN101954719A (en) | 2009-07-17 | 2009-07-17 | Ejection mechanism of injection mold |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110014316A1 true US20110014316A1 (en) | 2011-01-20 |
Family
ID=43465485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/778,133 Abandoned US20110014316A1 (en) | 2009-07-17 | 2010-05-12 | Injection molding device with ejection mechanism |
Country Status (2)
Country | Link |
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US (1) | US20110014316A1 (en) |
CN (1) | CN101954719A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120107441A1 (en) * | 2010-10-30 | 2012-05-03 | Cheng Uei Precision Industry Co., Ltd. | Mold having push-out structure |
CN102500912A (en) * | 2011-11-18 | 2012-06-20 | 上海交通大学 | Method for performing surface modification on metal by ultrasonic nano-welding |
EP2716427A1 (en) * | 2011-05-31 | 2014-04-09 | Taiho Kogyo Co., Ltd. | Molding device and method for manufacturing molded product |
CN105273883A (en) * | 2015-10-27 | 2016-01-27 | 周庆莉 | Health maintenance soap capable of changing white hair into black hair |
US20170016091A1 (en) * | 2014-05-27 | 2017-01-19 | Questek Innovations Llc | Highly processable single crystal nickel alloys |
KR20170103136A (en) * | 2016-03-03 | 2017-09-13 | 세메스 주식회사 | Ejector pin and die ejecting apparatus having the same |
FR3134332A1 (en) * | 2022-04-11 | 2023-10-13 | Liftmould, Lda | MOLD WITH EJECTION SYSTEM |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103433746B (en) * | 2013-08-19 | 2016-02-17 | 宁波中斌紧固件制造有限公司 | A kind of no waste mine packing ring former |
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US3523991A (en) * | 1966-02-28 | 1970-08-11 | Eastman Kodak Co | Method of injection molding a roller post |
US3940103A (en) * | 1974-02-21 | 1976-02-24 | Captocap Limited | Apparatus for injection molding a tamper-proof plastic cap |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120107441A1 (en) * | 2010-10-30 | 2012-05-03 | Cheng Uei Precision Industry Co., Ltd. | Mold having push-out structure |
EP2716427A1 (en) * | 2011-05-31 | 2014-04-09 | Taiho Kogyo Co., Ltd. | Molding device and method for manufacturing molded product |
EP2716427A4 (en) * | 2011-05-31 | 2014-11-12 | Taiho Kogyo Co Ltd | Molding device and method for manufacturing molded product |
US9266271B2 (en) | 2011-05-31 | 2016-02-23 | Taiho Kogyo Co., Ltd. | Molding device and method of manufacturing molded product |
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US20170016091A1 (en) * | 2014-05-27 | 2017-01-19 | Questek Innovations Llc | Highly processable single crystal nickel alloys |
CN105273883A (en) * | 2015-10-27 | 2016-01-27 | 周庆莉 | Health maintenance soap capable of changing white hair into black hair |
KR20170103136A (en) * | 2016-03-03 | 2017-09-13 | 세메스 주식회사 | Ejector pin and die ejecting apparatus having the same |
KR102430473B1 (en) * | 2016-03-03 | 2022-08-09 | 세메스 주식회사 | Ejector pin and die ejecting apparatus having the same |
FR3134332A1 (en) * | 2022-04-11 | 2023-10-13 | Liftmould, Lda | MOLD WITH EJECTION SYSTEM |
EP4261005A1 (en) * | 2022-04-11 | 2023-10-18 | Liftmould, Lda | Mould with ejection system |
Also Published As
Publication number | Publication date |
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CN101954719A (en) | 2011-01-26 |
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Legal Events
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AS | Assignment |
Owner name: HON HAI PRECISION INDUSTRY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUANG, CHIEN-FENG;REEL/FRAME:024370/0077 Effective date: 20100510 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |